DE10105625B4 - poetry - Google Patents

Abstract

Seal for arrangement between two machine or device components (102, 104), which comprises a sealing body (108) which, when the seal (100) is installed, separates a first space (144) from a second space (146) in a substantially fluid-tight manner, wherein the seal (100) comprises at least one line (130) with a jacket (132) which extends from the first space (144) through the sealing body (108) into the second space (146), characterized in that the Sheath (132) of the line (130) is fixedly connected to the sealing body (108) and that the seal (100) comprises a carrier element (128; 128 ') extending in the longitudinal direction (110) of the sealing body (108), the Carrier element (128 ') projects beyond one of the side faces (148) of the sealing body (108).

Description

The present invention relates to a seal for arrangement between two machine or device components, which is a sealing body includes which a first space of one when the seal is installed separates the second space essentially fluid-tight.

Such seals are from the stand known in the art.

In particular, seals are included one ring-shaped closed sealing body known from an elastomeric material which is between a cylinder head and a valve cover of an internal combustion engine are arranged, around the interior of the valve cover essentially fluid-tight from outer space to separate the valve cover.

In the interior of the valve cover Actuators (for example fuel injectors) are arranged which are connected to power supply lines on in the outside the valve cover arranged energy sources and via electrical control lines on outside of Valve cover arranged control units must be connected.

These power and control lines through through openings provided in the valve cover passed, these through openings in turn must be specially sealed to ensure fluid-tight separation the interior of the valve cover from the outside of the valve cover.

The attachment of these lines the valve cover increases the necessary for mounting the valve cover on the cylinder head Time and material costs for sealing the valve cover considerably.

From the DE 198 56 044 A1 a seal between two shells of a housing is known, which comprises a sealing body which, when the seal is installed, separates a first space from a second space in a substantially fluid-tight manner, the seal comprising cables which extend from the first space through the sealing body extend the second room. The cables are pulled through holes in the sealing body.

The DE 691 02 395 T2 discloses a connector and a housing for a control unit for controlling a function of an internal combustion engine, the housing being formed from two half-shells, each having cutouts, and the connector being a body made of elastomeric material for insertion into those defined by the cutouts in the half-shells Opening and a plurality of through holes in which electrically conductive pins are arranged.

The DE 42 23 487 A1 discloses a seal with an insert made of band-shaped material for reinforcing the seal, the insert being at least triple folded in the area of screw through holes, so that an elastomeric material of the seal against compression-preventing limiters is formed in the area of the holes.

The DE 42 43 015 C1 discloses an exhaust flange gasket for sealing exhaust pipes in internal combustion engines with at least one sensor arrangement resting on the gasket or embedded in the gasket, the sensor arrangement consisting of a temperature sensor reaching into the exhaust gas flow via the exhaust opening with its measuring head.

The present invention lies based on the task of reducing the time and material required, required to do this, one or more lines from the first Space in the second separated by the seal fluid-tight from the first space To lead through space.

This object is achieved by a Seal according to claim 1 solved.

Form in the solution according to the invention the sealing body and the at least one line is a prefabricated unit, which easy to manufacture and with little time between the machine or device components to be sealed must be assembled.

Because the at least one line integrated into the seal eliminates the need for additional Through openings or channels to Carry out the at least one line from the first room to the second Space on one or both of the machine or device components to be sealed provided.

The fact that the additional through openings channels not applicable, not applicable also the need to make such lead-through openings or channels fluid-tight seal.

The fact that the at least one line in common with the gasket being mounted will further reduce it the assembly time achieved.

By laying down the line on the sealing body prevents the Management in the operation of the seal and the components to be sealed comprehensive assembly is pulled through the sealing body. This increases the operational safety of the component group.

The seal according to the invention is particularly suitable for arrangement between a cylinder head and a valve cover of an internal combustion engine, the at least one fixed to the seal body connected line preferably an electrical control line for Control of one or more fuel injectors in the interior the valve cover is.

If the sealing body comprises a first side surface facing the first space in the installed state and a second side surface facing the second space in the installed state, the line preferably extends through the first side surface and the second side surface by.

Preferably the conduit is essentially fluid-tight in the sealing body embedded.

A particularly solid, reliable and tight connection of the line with the sealing body is achieved if the Sheath of the line in one piece the sealing body is trained.

An intimate connection between the Jacket of the line on the one hand and the sealing body on the other hand is achieved if advantageously the material of the jacket of the line through Adhesion and / or Cross-linking, in particular by vulcanization, with the material of the sealing body connected is.

Adhesion is used in this description Adhesive effect due to electrostatic, van der Waals or intermolecular Powers, not however understood due to chemical binding forces.

In contrast, with a Networking chemical bonds between the materials involved educated.

In principle, any material can be used for the sealing body Material used to produce a substantially fluid-tight seal is suitable.

In a preferred embodiment the invention provides that the sealing body is an elastomeric material includes.

This elastomeric material can preferably a fluorine rubber (FPM), a hydrogenated nitrile rubber (HNBR), an ethylene-acrylate rubber (AEM), an acrylate rubber (ACM), an ethylene vinyl acetate (EVA) and / or an ethylene propylene diene rubber (EPDM) his.

As a material for the coat of at least one Management comes in principle any material that has a sufficiently high mechanical stability at the operating temperatures of the seal and the two to be sealed Machine or device components comprehensive component group.

Is it the least a line around an electrical line, the jacket of the line must also have sufficient electrical insulation properties.

In addition to a sufficient electrical insulation effect also good durability It is special to reach at high temperatures of up to 200 ° C Cheap, if the jacket of the line comprises a fluoropolymer.

Suitable fluoropolymers with good temperature resistance Examples are PFA (perfluoroalkoxy polymers), FEP (copolymers from tetrafluoromethylene / hexafluoropropylene), PCTFE (poly (chlorotrifluoroethylene)), ETFE (ethylene / tetrafluoroethylene copolymers) and / or a composite made of ETFE and glass fibers, the proportion of the glass fibers preferably approximately Is 25% by weight.

To follow the path of at least one line the sealing body and the space occupied by the line in the sealing body is as small as possible to keep, it is advantageous if the line in the sealing body penetrates substantially perpendicular to its longitudinal direction.

The seal includes one in the longitudinal direction of the sealing body extending support member. By such a support element the seal can have increased stiffness be awarded so that the Seal before installation between the machine to be sealed or device components essentially takes the form in which it is installed Condition is present so that the seal particularly easy to install, for example in a receptacle the seal on one of the machine or device components to be sealed intended groove can be used.

Adequate for the seal To give dimensional stability, it is preferably provided that the carrier element a metallic material, preferably steel.

Because of the support element The stiffness given is easy to assemble.

To the management one if possible good hold in the sealing body to lend, it is preferably provided that the line with its jacket on the support element is applied. Such an arrangement of the line relative to the carrier element enables too a simple manufacture of the seal by placing the pipe on the support element supported into an injection mold is introduced, then the space remaining in the injection mold filled with the primary material of the sealing body and subsequently the sealing body, for example by increasing the temperature, hardened or is vulcanized.

The carrier element can be partially or Completely in the sealing body be embedded in the seal.

It is also provided that the carrier element via a of the side surfaces of the sealing body beyond stands. The protruding area of the carrier element one outside of the sealing body arranged bracket or support form.

It can also be provided that an outside of the sealing body arranged section of the line passed through the sealing body on the support element is applied. This makes it possible also one outside of the sealing body arranged section of the at least one line before the installation of the seal to pre-assemble what the required assembly time further decreased.

In particular, it can be provided that one or more lines beyond the area of the carrier element arranged outside the sealing body to a connection element, for example part of a plug connection, ge leads are.

To the at least one line in their location relative to the outside of the sealing body arranged area of the carrier element specify, it can be provided that the carrier element with an outside of the sealing body arranged bracket for the line is provided.

The production of the seal according to the invention can be simplified in that the carrier element with an inside of the sealing body arranged bracket for the line is provided. By means of such a holder, the Line already before the formation of the sealing body on the carrier element be pre-fixed. This ensures that the Lead during the formation of the sealing body, for example while an injection molding process, not relative to the support element emotional.

To the at least one line the assembly of the seal in a simple and quick way to one Sensor, an actuator, an energy source, another line or To be able to connect a line branch, it is advantageous if the line at at least one of its ends with a connecting element is provided.

It is particularly favorable if the line is on both ends are each provided with a connecting element.

These connection elements can in particular be part a plug connection, for example as a plug or socket his.

It can also be provided that the seal comprises several lines, which are connected to a common connection element with one end each are. As a result, the connection to this plurality of lines can be made via a single connection, for example, a connector.

Other features and advantages of Invention are the subject of the following description and drawings Representation of exemplary embodiments.

In the drawings:

1 a bottom view of a first embodiment of a seal;

2 a schematic section through the seal 1 along the line 2-2 in 1 ;

3 a schematic section through the seal 1 along the line 3-3 in 1 ;

4 a schematic cross section through the seal 1 when installed;

5 one of the 3 corresponding schematic sectional view of a second embodiment of a seal; and

6 a perspective, partially sectioned representation of a third embodiment of a seal with a protruding over an outer side surface of the sealing body support member.

Same or functionally equivalent Elements are designated by the same reference symbols in all figures.

One in the 1 to 4 illustrated first embodiment of a seal designated as a whole by 100 is for example for arrangement between a cylinder head 102 and a valve cover 104 (S. 4 ) an internal combustion engine is provided, the valve cover 104 is preferably formed from a plastic material.

The seal 100 forms together with the cylinder head 102 and the valve cover 104 a component group 106 ,

How best from the 2 and 4 it can be seen that includes the seal 100 a sealing body 108 which is along a longitudinal direction 110 extends and is closed in a ring (s. 1 ).

Perpendicular to the longitudinal direction 110 points the sealing body 108 has a substantially T-shaped cross-section, with an essentially rectangular base in section 112 , from the top of which there is a centrally arranged web 114 extends upwards.

At a rounded upper end of the web 114 is an upper sealing bead 116 formed which is along the longitudinal direction 110 extends.

From the bottom of the base 112 of the sealing body 108 stand out an inner lower sealing bead 118 and an outer lower sealing bead 120 , both along the longitudinal direction 110 extend down in front.

Between the two lower sealing beads 118 and 120 is a medium groove 122 formed, and between each of the lower sealing beads 118 . 120 and one shoulder each 124 that have a side edge of the bottom of the base 112 forms, is a lateral groove 126 trained, with all grooves 122 and 126 itself in the longitudinal direction 110 extend.

The entire seal body 108 that is the base 112 with the lower sealing beads 118 . 120 and the dock 114 with the upper sealing bead 116 is integrally formed from an elastomeric material.

Which elastomer material to form the sealing body 108 preferred depends on the media with which the seal 100 in the operation of the component group 106 comes into contact.

Should the seal 100 used for oil sealing, so it is used as the material for the sealing body 108 preferably a fluorine rubber (FPM), a hydrogenated nitrile rubber (HNBR), an ethylene-acrylate rubber (AEM), an acrylate rubber (ACM) and / or an ethylene-vinyl acetate (EVA).

Silicone materials, in particular when using fully synthetic engine oils, less preferred.

Should the seal 100 for cooling water sealing serve serve as an elastomer material for the sealing body 108 preferably a fluorine rubber (FPM) and / or an ethylene-propylene-diene rubber (EPDM) is used.

To increase the rigidity of the sealing body 108 is in the base 112 the same a band-shaped carrier element 128 embedded, which has a substantially rectangular cross section and along the longitudinal direction 110 of the sealing body 108 extends.

How best from the 1 . 3 and 4 it can be seen that includes the seal 100 also lines 130 which the seal body 108 essentially perpendicular to its longitudinal direction 110 enforce and a substantially hollow cylindrical drische coat 132 (S. 3 ) and one of the coat 132 surrounding core 134 include.

How out 1 you can see the cables 130 along the longitudinal direction 110 of the sealing body 108 spaced from each other.

The coat 132 every line 130 is tight and firm with the material of the sealing body 108 connected so that between the coat 132 and the material of the sealing body 108 there are no gaps that would have to be sealed separately.

Furthermore, the material of the jacket 132 so with the material of the sealing body 108 connected that the coat 132 on the sealing body 108 is fixed and cannot be extracted from the same.

The coat also lies 132 directly on the top of the support element 128 on.

The carrier element 128 can comprise any suitable, sufficiently rigid material.

Preferably a metallic one Material, such as steel, is used.

As a material for the coat 132 of the lines 130 any material can be used, which is able with the material of the sealing body 108 to make a tight and firm connection.

Are the lines 130 around electrical wires, so should the material of the jacket 132 be electrically insulating.

It is also advantageous if the material of the jacket 132 has high mechanical stability even at high operating temperatures.

A fluoropolymer is preferably used as the material for the jacket 132 used.

Building the core 134 of the lines 130 depends on the function of the lines 130 ,

Are the lines 130 around electrical wires, so the core 134 consist of an electrically conductive material, for example copper.

However, it is also conceivable that the core 134 is designed as a bundle of several electrical cables, which can in particular be insulated from one another.

The lines 130 can also be designed as optical lines.

In this case the core includes 134 preferably an optical fiber bundle, in particular a glass fiber bundle.

The outside of the seal body 108 arranged ends of the lines 130 are each with a connector 136 provided, which is designed as part of a plug connection (for example, as a plug or a socket) and the connection of the relevant line 130 to a sensor, an actuator, an energy source or another line or a line branch.

How out 3 can be seen is on the sealing body 108 in the area of conducting a line 130 each have a thickening in the form of the line in question 130 concentrically surrounding sleeve 136 trained to lead 130 a particularly good hold and protection in the sealing body 108 to give.

How out 4 can be seen, the seal 100 so between the cylinder head 102 and the valve cover 104 arranged that the web 114 into one on the valve cover 104 intended groove 138 extends into it, with the upper sealing bead 116 at the bottom of the groove 138 is applied, and that the lower sealing beads 118 . 120 into one on the cylinder head 102 intended groove 140 extend into it, with the sealing beads 118 and 120 at the bottom of the groove 140 issue.

The valve cover 104 and the cylinder head 102 are by means of (not shown) fasteners, which through holes 142 (S. 1 ) in the sealing body 108 push through, tightened against each other so that the sealing beads 116 . 128 and 120 deform elastically and / or plastically and a fluid-tight seal of the inside of the annular seal 100 arranged first room 144 from the outside of the annular seal 100 arranged second room 146 is guaranteed.

The lines extend 130 from the outer second room 146 out through the the second room 146 facing outer side surface 148 , through the base 112 and through the inner first space 144 facing inner side surface 150 of the sealing body 108 through into the inner first room 144 into it.

The one in the inner second room 144 arranged ends of the lines 130 can be connected to fuel injectors located there, for example, so that the lines 130 serve as control lines for controlling these injectors.

The seal described above 100 is made by the support member 128 and the lines 130 within one of the outer contours of the sealing body 108 Corresponding injection mold can be arranged as it is in the finished seal 100 corresponds to it the space remaining in the injection mold with the primary material of the sealing body 108 filled and then the sealing body is cured or vulcanized, for example by increasing the temperature.

Preferably the material of the jacket goes 132 each of the lines 130 in this curing or vulcanization process, an intimate, firm and tight connection with the material of the sealing body 108 on.

In particular, the sealing body 108 to the coats 132 of the lines 130 be vulcanized.

After the sealing body has hardened 108 becomes the seal 100 removed from the injection mold.

The connection elements 136 at the ends of the lines 130 can after the injection molding process or beforehand with the lines 130 get connected.

One in 5 illustrated second embodiment of a seal 100 differs from the first embodiment described above in that the lines 130 not just on the top of the support element 128 rest, but by means of a respective line 130 encompassing tongue 152 on the support element 128 are clamped.

The tongue 152 is essentially rectangular and becomes along three of its boundary sides from the support member 128 punched. Then the holding tongue 152 around its fourth boundary edge 153 upwards from the carrier element 128 bent.

Then the on the support element 128 line to be arranged 130 about that after bending out the retaining tongue 152 in the carrier element 128 created hole 154 placed, and the retaining tongue 152 so against the coat 132 bent to the side and from above on the coat 132 is present and the line 130 between the tongue 152 and the top of the support member 128 is clamped.

Then the support element 128 with the cables clamped to it 130 into the injection mold to make the seal 100 inserted.

By pre-fixing the cables 130 on the support element 128 it is guaranteed that the lines 130 during the injection molding process to form the sealing body 108 not relative to the support element 128 move.

Otherwise, the second embodiment of a seal is correct 100 in terms of structure and function with the first embodiment, to the above description of which reference is made.

One in 6 illustrated third embodiment of a seal 100 differs from the embodiments described above in that the carrier element 128 ' not on all sides of the sealing body 108 is enclosed, but rather over one of the side surfaces of the sealing body 108 out into one of the rooms to be separated 144 . 146 survives.

At the in 6 illustrated embodiment, the carrier element 128 ' over the outer side surface 148 of the sealing body 108 in the outer second room 146 over and forms in the outer space of the sealing body 108 a level surface 156 and guidance for one or more of the lines 130 ,

To the lines 130 in their position relative to the sealing body 108 to fix is the requirement 156 with cable guides or brackets 158 with which each one or more lines 130 at the edition 156 are set.

These brackets 158 can be formed from a thermoplastic material, from an elastomer material or from a metallic material.

Several of the lines 130 are over the edition 156 to a common, at the edition 156 arranged connection element 136 ' performed so that these multiple lines when assembling the seal 130 can be connected simultaneously by means of a single complementary connecting element.

To the lines 130 in the inner first room 144 To be able to lead to the respective connection elements, it can also be provided that the carrier element 128 ' over the inner side surface 150 of the sealing body 108 in the inner first room 144 survives and there is a support and guidance for one or more of the lines 130 forms.

Otherwise, the third embodiment is correct Structure and function in accordance with the first embodiment, on the above Description so far.

Claims (14)

Seal for arrangement between two machine or device components ( 102 . 104 ) that have a sealing body ( 108 ) which, when the seal is installed ( 100 ) a first room ( 144 ) from a second room ( 146 ) separates essentially fluid-tight, the seal ( 100 ) at least one line ( 130 ) with a coat ( 132 ), which results from the first room ( 144 ) through the sealing body ( 108 ) into the second room ( 146 ), characterized in that the jacket ( 132 ) the management ( 130 ) firmly with the sealing body ( 108 ) and that the seal ( 100 ) one in the longitudinal direction ( 110 ) of the sealing body ( 108 ) extending support element ( 128 ; 128 ' ), wherein the carrier element ( 128 ' ) over one of the side surfaces ( 148 ) of the sealing body ( 108 ) survives. Seal according to claim 1, characterized in that the jacket ( 132 ) the management ( 130 ) in one piece with the sealing body ( 108 ) is trained. Seal according to one of claims 1 or 2, characterized in that the material of the casing ( 132 ) the management ( 130 ) by adhesion and / or crosslinking, in particular by vulcanization, with the material of the sealing body ( 108 ) connected is. Seal according to one of claims 1 to 3, characterized in that the sealing body ( 108 ) an elastomeric material, preferably a fluorine rubber (FPM), a hydrogenated nitrile rubber (HNBR), an ethylene-acrylate rubber (AEM), an acrylate rubber (ACM), an ethylene-vinyl acetate (EVA) and / or comprises an ethylene-propylene-diene rubber (EPDM). Seal according to one of claims 1 to 4, characterized in that the jacket ( 132 ) the management ( 130 ) comprises a fluoropolymer. Seal according to one of claims 1 to 5, characterized in that the line ( 130 ) the sealing body ( 108 ) essentially perpendicular to its longitudinal direction ( 110 ) enforced. Seal according to one of claims 1 to 6, characterized in that the carrier element ( 128 ; 128 ' ) comprises a metallic material, preferably steel. Seal according to one of claims 1 to 7, characterized in that the line ( 130 ) with her coat ( 132 ) on the carrier element ( 128 ; 128 ' ) is present. Seal according to one of claims 1 to 8, characterized in that an outside of the sealing body ( 108 ) arranged section of the line ( 130 ) on the carrier element ( 128 ' ) is present. Seal according to claim 9, characterized in that the carrier element ( 128 ' ) with an outside of the sealing body ( 108 ) arranged bracket ( 158 ) for the management ( 130 ) is provided. Seal according to one of claims 1 to 10, characterized in that the carrier element ( 128 ) with one inside the sealing body ( 108 ) arranged bracket ( 152 ) for the management ( 130 ) is provided. Seal according to one of claims 1 to 11, characterized in that the line ( 130 ) on at least one of its ends with a connecting element ( 136 ; 136 ' ) is provided. Seal according to claim 12, characterized in that the line at both ends with a connecting element ( 136 ; 136 ' ) is provided. Seal according to one of claims 12 or 13, characterized in that at least one of the connecting elements ( 136 ; 136 ' ) is designed as part of a plug connection.